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Orifice plates
| Spécifications | |
| Design | Conforms to ISA RP 3.2 , DIN 1952 , BS 1042, ISO-5167 |
| Types | Square edge concentric, Quadrant edged, Conical entrance, Eccentric, Segmental |
| Plate material | SS304 , SS316 , SS316L as standard. Hastelloy-C , Monel , PP , PVC , PTFE coated , etc. can be given on request. |
| Orifice Bore | In accordance with ISO-5167, BS-1042, ASME MFC 3M, R.W.Miller, L.K.Spink, AGA-3 |
| Tab Plate | In the same material as plate & is welded to orifice plate. Tab plate integral to the Orifice plate (i.e. without welding) can also be offered as a special case. |
| Vent / Drain | Vent or Drain holes are provided as per customer's requirement. The diameter of the vent or drain holes are as per ISA RP 3.2 |
| Flange Union | Weld neck, Slip on, Threaded, Socket welded with RF or RTJ facing Orifice flanges are in accordance with ANSI B16.36 with minimum flange rating of 300 for sizes up to 8" or male - female flanges in accordance with ANSI B16.5 |
| Pressure Tappings | Corner tappings are recommended for sizes upto 1 ½"; Flange taps from 2" to 16" ; D - D/2 taps for higher sizes |
| Gasket | CAF as per IS: 2712 Gr 0/1 , SS spiral wound + CAF , SS spiral wound + Grafoil, SS spiral wound + PTFE are normally supplied as per process requirement. Other materials available on request. For RTJ flanges , the plate is fixed on the plate holder. The plate holder is in Soft Iron material & acts as a gasket.
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| Studs / Nuts | ASTM A193 Gr.B7/A-194 Gr.2H as standard, Other material on request. |
| Jack Screw | ASTM A193 Gr.B7/A-194 Gr.2H as standard, Other material on request. |
